DETROIT (AP) — The Michigan State Police crime lab has stopped screening blood samples for THC, the compound that gives marijuana users a high, after problems with testing. Spokeswoman Shanon Banner says county prosecutors were informed this week. Banner says the suspension will be in place until there's another “validated method of testing to ensure accuracy.”
Since 2018, marijuana has been legal under state law for people who are at least 21. Medicinal use was approved 10 years earlier. But it's still illegal to drive under the influence of marijuana. Michigan, unlike some other states, has no established threshold. But prosecutors still can present evidence of THC in court in vehicle crashes or other incidents.
